The Magnetic Prandtl number (Prm) is a dimensionless quantity occurring in magnetohydrodynamics which approximates the ratio of momentum diffusivity ( viscosity) and magnetic diffusivity. [1] It is defined as:
where:
At the base of the Sun's convection zone the Magnetic Prandtl number is approximately 10−2, [2] and in the interiors of planets and in liquid-metal laboratory dynamos is approximately 10−5.
The Magnetic Prandtl number (Prm) is a dimensionless quantity occurring in magnetohydrodynamics which approximates the ratio of momentum diffusivity ( viscosity) and magnetic diffusivity. [1] It is defined as:
where:
At the base of the Sun's convection zone the Magnetic Prandtl number is approximately 10−2, [2] and in the interiors of planets and in liquid-metal laboratory dynamos is approximately 10−5.